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【单选题】

New procedures for the operation of the security system will ______ to ensure that there are no more delays in accessing the building on weekends.
A．introduce

B．introducing
C．introduction
D．be introduced
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根据网考网移动考试中心的统计，该试题：

3%的考友选择了A选项

6%的考友选择了B选项

16%的考友选择了C选项

75%的考友选择了D选项

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